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To: Jing Qian who wrote (4359)	1/19/1999 12:48:00 PM
From: Keith Hankin	Read Replies (1) \| Respond to of 29970

MPEG2 is a compressing protocol. It can compress trememduous amount of voice frames into one IP packet. Voice is the simplest form of multimedia. It doesn't need a lot of bandwidth. A 10K bps is more than enough for stereo quality sound. Then why is ADSL not appropriate for voice? Cable transmission is simply faster than ADSL and its bandwidth is sharable. Actually, this is a disadvantage. The fact that the bandwidth is shared means that it is more difficult to guarantee real-time delivery. Sharable bandwidth makes best use of resources, so the cost is lower than ADSL. Actually, the pipes for ADSL delivery already exist, and thus the cable solution will cost more since much of it still needs to be deployed.